If you can, try to get hold of a friend's gfx card and install that. If everything seems ok then it's either a hardware prob with the 560Ti or a software conflict/corruption/issue (or both). An easy way to find out is to get your friend to install the 560, alternatively try another full re-install of the OS - and only the OS.
Recheck all motherboard seTtings & connections very carefully. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1387134 Title: when enabled nvidia graphics card, desktop freezes To manage notifications about this bug go to: https://bugs.launchpad.net/xorg-server/+bug/1387134/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
